package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Slf4j
@Service
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;

    /**
     * 新增菜品和口味
     * @param dishDTO
     */
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);

        Long dishId = dish.getId();

        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            dishFlavorMapper.insertBatch(flavors);
        }

    }

    /**
     * 菜品分页查询
     * @param dishPageQueryDTO
     */
    public PageResult page(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQurry(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());

    }

    /**
     * 菜品删除
     * @param ids
     */
    @Transactional
    @Override
    public void deleteByIds(List<Long> ids) {
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if(dish.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        List<Long> setmealIds = setmealDishMapper.getSetmealIdByDishIds(ids);
        if(setmealIds != null && setmealIds.size() > 0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        dishMapper.deleteById(ids);
        dishFlavorMapper.deleteByDishId(ids);
    }

    /**
     * 菜品起售停售
     * @param status
     * @param id
     */
    @Override
    public void updateStatus(Integer status, Long id) {
        Dish dish = Dish.builder()
                .status(status)
                .id(id)
                .build();
        dishMapper.update(dish);

    }

    /**
     * 更新菜品
     * @param dishDTO
     */
    @Override
    @Transactional
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        dishFlavorMapper.deleteByDId(dishDTO.getId());

        List<DishFlavor>flavors = dishDTO.getFlavors();
        if(flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insertBatch(flavors);
        }

    }

    /**
     * 根据id查询菜品和口味
     * @param id
     * @return
     */
    @Override
    public DishVO getById(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> flavor = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(flavor);
        return dishVO;

    }

    /**
     * 根据类别id查询
     * @param categoryId
     * @return
     */
    @Override
    public List<Dish> list(Long  categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }

    /**
     * 根据分类id查询菜品
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> list = dishMapper.list(dish);
        List<DishVO> dishVOS = new ArrayList<>();

        for(Dish d : list){
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());
            dishVO.setFlavors(flavors);

            dishVOS.add(dishVO);
        }

        return dishVOS;

    }
}
